Reason for revert:
Reverting due to internal breakage. Will investigate and re-land
Original issue's description:
> Remove usage of deprecated g_type_init API
>
> BUG=webrtc:7024
>
> Review-Url: https://codereview.webrtc.org/2660823003
> Cr-Commit-Position: refs/heads/master@{#16376}
> Committed: b2caab7f60
TBR=kjellander@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7024
Review-Url: https://codereview.webrtc.org/2666103002
Cr-Commit-Position: refs/heads/master@{#16379}